Calibrated three Gaia passbands, G (left), GBP (centre), and GRP (right) used for Gaia DR2 processing. The calibration has been achieved using a set of 93 SPSS. Black lines represent nominal response curves, while the coloured lines show the calibrated curves. Shaded areas represent the ± 1σ level: the error curve has been computed by standard propagation of the uncertainty using the model covariance matrix obtained in the model-fitting process. The bottom panels show the difference between calibrated and nominal curves.
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